Perfectly compatible with Polaris 280 and 480, K13 and K16 robotic pool cleaners. Same design and quality as the original PREMIUM COMPONENTS: Ultra-fine mesh captures the smallest particles of dirt, snap closure premium zipper, durable seams with reinforced edges. The connection between the bag and the hard plastic retaining ring keeps the bag entrance always open and allows better passage of the waste. The claw has a automatic locking mechanism that simplifies installation and use, the velcro fastening on the tube allows better passage through the tube. by dirt and the bag is easy to remove. Open and pull back with the hook. the high-end buckle that covers the entire width of the bag. Size: Length - 34 cm / Width - 23 cm / Opening diameter - 7 cm Set of 2 bags Stringer, ZIP for Polaris 280 or 480 robots.